I have this display Memory: 38 of 768 MB (5%) | WP LIMIT: 40 MB | IP 127.0.0.1
Its only 5% but wp limit is almost reach. Why WP is limit in 40mb where there plenty more. I guess this is where u change at wp-config.php and allow wordpress use more memory.
But when more people visit websites, the more memory is require to serve the request